Malicious PDF — malware analysis report

Static analysis result for SHA-256 b19dc19eac2168f9…

MALICIOUS

PDF

149.7 KB Created: 2020-12-26 13:01:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9a2c39b2e82d3d5d3d5ca2399c1c9706 SHA-1: 17dc4b463b8ea152cc517e8fa208c04efd725ac6 SHA-256: b19dc19eac2168f916638d3350a3e359250a4675436c413beb81742c5c0687b1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'traffnew.ru', which is a strong indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffnew.ru/123?utm_term=iberian+peninsula+physical+map PDF link annotation
    • https://cdn.sqhk.co/boxokozofe/icjbiaS/talking_tom_bubble_shooter_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxawexa/ihhc7hg/87368646456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f941d3be4cd7.pdfIn PDF document text
    • https://regumalewa.weebly.com/uploads/1/3/4/6/134694163/5a6dbaa17f3.pdfIn PDF document text
    • https://cdn.sqhk.co/fekimevexi/hihi7ij/netflix_price_per_month_malaysia.pdfIn PDF document text
    • https://cdn.sqhk.co/kozuvurop/Phqjjic/xotariz.pdfIn PDF document text
    • https://cdn.sqhk.co/xebibugekux/iaGvgi5/galaxy_quest_miners_not_miners.pdfIn PDF document text
    • https://cdn.sqhk.co/kafekata/ChgI1Za/41075466822.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a6abba3-b9ce-49f3-9486-2b2fd3c21c0c/75906584087.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/27704400478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f570cb0-e4d2-4bcd-be0e-af421476364d/10520507911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca44ac8b-1d23-420e-a93d-b248bfebe6dd/command_economy_advantages_articles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/482cea9c-8c1e-46cc-90bb-d127a9c6448c/19772920133.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001eb7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EB7C 5352 bytes
SHA-256: fa934043b826d1eaa28082c185de92fb71a3948225ddc20e1333c8d52e16abbf
font_01_sfnt_off0001fd84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FD84 18352 bytes
SHA-256: 84a62879e801532f13817361d0bb789a838a521cf03a7b83142c543b75de025f
font_02_sfnt_off000232cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x232CF 16484 bytes
SHA-256: 0d89ca3f304027848cd6a8c7d57496772f86eb1e02849e047d0a30a5616bc0f6

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